Home / 2,643.64-3,967.80-1,345.84

Finding the Fourth Proportional to 2,643.64, 3,967.80 and 1,345.84

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Solution

The fourth proportional to 2,643.64, 3,967.80 and 1,345.84 is: 2,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.64 : 3,967.80 = 1,345.84 : x
  2. Step 2: Convert to fraction form
    2,643.64/3,967.80 = 1,345.84/x
  3. Step 3: Cross multiply
    2,643.64x = 3,967.80 × 1,345.84
  4. Step 4: Simplify right side
    2,643.64x = 5,340,023.95
  5. Step 5: Solve for x
    x = 5,340,023.95/2,643.64
  6. Step 6: Final answer
    x = 2,019.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.